Design........................................................................................563
Function block.................................................................................565
Input and output signals..................................................................565
Setting parameters..........................................................................565
Technical data.................................................................................566
Section 10 Multipurpose protection.....................................................567
General current and voltage protection CVGAPC................................567
Measured quantities within CVGAPC.........................................567
Base quantities for CVGAPC function........................................570
Built-in overcurrent protection steps...........................................570
Built-in undercurrent protection steps.........................................576
Built-in overvoltage protection steps...........................................577
Built-in undervoltage protection steps........................................577
Logic diagram.............................................................................577
Function block.................................................................................583
Input and output signals..................................................................584
Setting parameters..........................................................................585
Technical data.................................................................................593
Section 11 Secondary system supervision..........................................597
Current circuit supervision CCSRDIF (87)............................................597
Introduction......................................................................................597
Principle of operation.......................................................................597
Function block.................................................................................599
Input and output signals..................................................................599
Setting parameters..........................................................................600
Technical data.................................................................................600
Fuse failure supervision SDDRFUF......................................................600
Zero and negative sequence detection......................................601
Delta current and delta voltage detection...................................605
Dead line detection.....................................................................607
Main logic...................................................................................607
Function block.................................................................................611
Input and output signals..................................................................611
Setting parameters..........................................................................612
Technical data.................................................................................613
Table of contents
15
Technical reference manual
Summary of Contents for Relion 670 series
Page 1: ...Relion 670 series Line differential protection RED670 ANSI Technical reference manual...
Page 2: ......
Page 40: ...34...
Page 50: ...44...
Page 60: ...54...
Page 126: ...120...
Page 384: ...378...
Page 496: ...490...
Page 556: ...550...
Page 602: ...596...
Page 620: ...614...
Page 794: ...788...
Page 864: ...858...
Page 988: ...982...
Page 998: ...992...
Page 1084: ...1078...
Page 1164: ...1158...
Page 1168: ...1162...
Page 1220: ...1214...
Page 1230: ...1224...
Page 1231: ...1225...